BP Group Calendar css issue

Hello, there is an issue, I think in css, how the Month View is displayed in a BP group. The event title and description is often getting outside of the framed boundary, depending on the display width. There are also some improper or exceeding lines in the Month View field. This problem is seen with almost all themes I tried (except 2015, 2016 and maybe some other Twenty… themes). See the screenshots with the GeneratePress theme.